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參數(shù)資料
| 型號(hào)： | DAC813 |
| 英文描述： | Microprocessor-Compatible 12-BIT DIGITAL-TO-ANALOG CONVERTER |
| 中文描述： | 微處理器兼容的12位數(shù)字到模擬轉(zhuǎn)換器 |
| 文件頁數(shù)： | 6/11頁 |
| 文件大小： | 298K |
| 代理商： | DAC813 |
6
DAC813
20
10
0
–10
–20
–40
–2
Time (μs)
SETTLING TIME, –10V TO +10V
+5
0
W
0
2
4
6
8
10
12
14
V
OUT
WR
V
OUT
1LSB = 4.88mV
20
10
0
–10
–20
–2
Time (μs)
SETTLING TIME, +10V TO –10V
+5
0
0
2
4
6
8
10
12
W
1LSB = 4.88mV
V
OUT
WR
TYPICAL PERFORMANCE CURVES
(CONT)
At T
A
= +25
°
C, V
CC
=
±
15V, unless otherwise noted.
DISCUSSION OF
SPECIFICATIONS
INPUT CODES
The DAC813 accepts positive-true binary input codes.
DAC813 may be connected by the user for any one of the
following codes: USB (Unipolar Straight Binary), BOB
(Bipolar Offset Binary) or, using an external inverter on the
MSB line, BTC (Binary Two’s Complement). See Table I.
MONOTONICITY
A D/A converter is monotonic if the output either increases
or remains the same for increasing digital inputs. All grades
of DAC813 are monotonic over their specification tempera-
ture range.
DRIFT
Gain Drift is a measure of the change in the Full Scale Range
(FSR) output over the specification temperature range. Gain
Drift is expressed in parts per million per degree Celsius
(ppm/
°
C).
Unipolar Offset Drift is measured with a data input of
000
HEX
. The D/A is configured for unipolar output. Unipolar
Offset Drift is expressed in parts per million of Full Scale
Range per degree Celsius (ppm of FSR/
°
C).
Bipolar Zero Drift is measured with a data input of 800
HEX
.
The D/A is configured for bipolar output. Bipolar Zero Drift
is expressed in parts per million of Full Scale Range per
degree Celsius (ppm of FSR/
°
C).
SETTLING TIME
Settling Time is the total time (including slew time) for the
output to settle within an error band around its final value
after a change in input. Three settling times are specified to
±
0.012% of Full Scale Range (FSR): two for maximum full
scale range changes of 20V and 10V, and one for a 1LSB
change. The 1LSB change is measured at the major carry
(7FF
HEX
to 800
HEX
and 800
HEX
to 7FF
HEX
), the input tran-
sition at which worst-case settling time occurs.
REFERENCE SUPPLY
DAC813 contains an on-chip +10V reference. This voltage
(pin 6) has a tolerance of
±
50mV. V
REF OUT
must be con-
nected to V
REF IN
through a gain adjust resistor with a
nominal value of 500
. The connection can be made through
an optional 1k
trim resistor to provide adjustment to zero
DIGITAL
INPUT
ANALOG OUTPUT
USB
Unipolar
Straight
Binary
BOB
Bipolar
Offset
Binary
BTC*
Binary
Two’s
Complement
MSB to LSB
FFF
HEX
800
HEX
7FF
HEX
000
HEX
+ Full Scale
+ 1/2 Full Scale
+ 1/2 Full Scale – 1LSB
Zero
+ Full Scale
Zero
Zero – 1LSB
– Full Scale
Zero – 1LSB
– Full Scale
+ Full Scale
Zero
* Invert MSB of BOB code with external inverter to obtain BTC code.
TABLE I. Digital Input Codes.
LINEARITY ERROR
Linearity error as used in D/A converter specifications by
Burr-Brown is the deviation of the analog output from a
straight line drawn between the end points (inputs all “1s”
and all “0s”). The DAC813 linearity error is specified at
±
1/4LSB (max) at +25
°
C K grades, and
±
1/2LSB (max) for
J grades.
DIFFERENTIAL LINEARITY ERROR
Differential linearity error (DLE) is the deviation from a
1LSB output change from one adjacent state to the next. A
DLE specification of 1/2LSB means that the output step size
can range from 1/2LSB to 3/2LSB when the input changes
from one state to the next. Monotonicity requires that DLE
be less than 1LSB over the temperature range of interest.
相關(guān)PDF資料 |
PDF描述 |
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| DAC813KU | Microprocessor-Compatible 12-BIT DIGITAL-TO-ANALOG CONVERTER |
| DAC813AU | Microprocessor-Compatible 12-BIT DIGITAL-TO-ANALOG CONVERTER |
| DAC813JP | Microprocessor-Compatible 12-BIT DIGITAL-TO-ANALOG CONVERTER |
| DAC813JU | Microprocessor-Compatible 12-BIT DIGITAL-TO-ANALOG CONVERTER |
| DAC813KP | Microprocessor-Compatible 12-BIT DIGITAL-TO-ANALOG CONVERTER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| DAC813AU/1KG4 | 功能描述:數(shù)模轉(zhuǎn)換器- DAC Mcrprcsr-Compatible 12-Bit RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| DAC813AUG4 | 功能描述:數(shù)模轉(zhuǎn)換器- DAC Mcrprcsr-Compatible 12-Bit RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| DAC813JP | 功能描述:數(shù)模轉(zhuǎn)換器- DAC Mcrprcsr-Compatible 12-Bit RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉(zhuǎn)換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時(shí)間:1 us 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
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